function solve() {
    let button = document.getElementsByTagName("button")
    let textArea = document.getElementsByTagName("textarea")[0]

    let list = {}

    Array.from(button).forEach(b => {
        b.addEventListener("click", (e) => {
            if (e.target.className === "add-product") {
                let currentElement = e.target.parentElement

                let priceElement = Number(currentElement.nextElementSibling.innerHTML)
                let brandElement = currentElement.previousElementSibling.children[0].innerHTML

                if (!list[brandElement]) {
                    list[brandElement] = 0
                }
                list[brandElement] += priceElement

                textArea.innerHTML += `Added ${brandElement} for ${priceElement.toFixed(2)} to the cart.\n`
            } else {

                let totalPrice = Number(Object.values(list).reduce((a,b)=>a+b))
                textArea.innerHTML+=`You bought ${Object.keys(list).join(', ')} for ${totalPrice.toFixed(2)}.`

                Array.from(button).forEach(b => b.disabled = true)

            }
        })
    })
}